rbls {
  uceprotect1 {
    symbol = "RBL_UCEPROTECT_LEVEL1";
    rbl = "dnsbl-1.uceprotect.net";
  }
  uceprotect2 {
    symbol = "RBL_UCEPROTECT_LEVEL2";
    rbl = "dnsbl-2.uceprotect.net";
  }
}